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Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE INDEX

DTC

⁽¹⁾ Description

⁽²⁾ Code Type

BXXXX ⁽³⁾

Body Control Systems Malfunction

N/A

CXXXX ⁽³⁾

Chassis Control System Malfunction

N/A

Mass Air Flow Sensor Performance

B

MAF Sensor Circuit - Low Frequency

B

MAF Sensor Circuit - High Frequency

B

MAP System Performance

B

MAP Sensor Circuit - Low Voltage

B

MAP Sensor Circuit - High Voltage

B

IAT Sensor Circuit - Low Voltage

B

IAT Sensor Circuit - High Voltage

B

ECT Sensor Performance

B

ECT Sensor Circuit - Low Voltage

B

ECT Sensor Circuit - High Voltage

B

Throttle Position Sensor Range/Performance

B

Throttle Position Sensor Circuit - Low Voltage

B

Throttle Position Sensor Circuit - High Voltage

B

Excess Time To Enter Closed Loop Fuel Control

B

ECT Less Than Thermostat Regulating Temperature

B

HO2S Circuit - Low Voltage - Bank 1, Sensor 1

B

HO2S Circuit - High Voltage - Bank 1, Sensor 1

B

HO2S Circuit - Slow Response - Bank 1, Sensor 1

B

HO2S Circuit - Insufficient Activity - Bank 1, Sensor 1

B

HO2S Heater Circuit - Bank 1, Sensor 1

B

HO2S Circuit - Low Voltage - Bank 1, Sensor 2

B

HO2S Circuit - High Voltage - Bank 1, Sensor 2

B

HO2S Circuit - Insufficient Activity - Bank 1, Sensor 2

B

HO2S Heater Circuit - Bank 1, Sensor 2

B

HO2S Circuit - Low Voltage - Bank 2, Sensor 1

B

HO2S Circuit - High Voltage - Bank 2, Sensor 1

B

HO2S Circuit - Slow Response - Bank 2, Sensor 1

B

HO2S Circuit - Insufficient Activity - Bank 2, Sensor 1

B

HO2S Heater Circuit - Bank 2, Sensor 1

B

HO2S Circuit - Low Voltage - Bank 2, Sensor 2

B

HO2S Circuit - High Voltage - Bank 2, Sensor 2

B

HO2S Circuit - Insufficient Activity - Bank 2, Sensor 2

B

HO2S Heater Circuit - Bank 2, Sensor 2

B

Fuel Trim System Lean - Bank 1

B

Fuel Trim System Rich - Bank 1

B

Fuel Trim System Lean - Bank 2

B

Fuel Trim System Rich - Bank 2

B

Fuel Injector Control Circuit

B

P0218 ⁽⁴⁾

Transmission Fluid Over-temperature

C

Fuel Pump Control Relay Circuit

B

Engine Misfire Detected

⁽⁵⁾ B

Crankshaft Position Sensor Variation Not Learned

A

Knock Sensor Module Circuit

B

Knock Sensor Circuit - Low Voltage - Sensor 1

B

Knock Sensor Circuit - Low Voltage - Sensor 2

B

Crankshaft Position Sensor Circuit

B

Crankshaft Position Sensor Circuit Performance

B

Camshaft Position Sensor Circuit Performance

B

Camshaft Position Sensor - Signal Low

B

Camshaft Position Sensor - Signal High

B

Ignition Control Circuit

B

EGR Flow Error

A

EGR Control Circuit Range/Performance

B

EGR Valve Position Sensor Signal - Low Voltage

B

TWC System - Low Efficiency - Bank 1

A

TWC System - Low Efficiency - Bank 2

A

EVAP System - Small Leak

A

EVAP Purge Solenoid Control Circuit

B

EVAP System Vent Blocked Or Restricted

A

EVAP Canister Vent Solenoid Valve Control Circuit - Electrical Malfunction

B

Fuel Tank Pressure Sensor - Low Voltage

B

Fuel Tank Pressure Sensor - High Voltage

B

EVAP System Leak Detected - Gross Leak/No Flow

A

P0461 ⁽⁶⁾

Fuel Level Sensor Circuit Performance

C

P0462 ⁽⁶⁾

Fuel Level Sensor Circuit - Low Voltage

C

P0463 ⁽⁶⁾

Fuel Level Sensor Circuit - High Voltage

C

EVAP System High Purge Flow

B

P0502 ⁽⁴⁾

Vehicle Speed Sensor Low Output

⁽⁷⁾

P0503 ⁽⁴⁾

Vehicle Speed Sensor Erratic

⁽⁷⁾

Idle Control System - Low RPM

B

Idle Control System - High RPM

B

P0522 ⁽⁶⁾

Engine Oil Pressure Sensor Circuit - Low Voltage

C

P0523 ⁽⁶⁾

Engine Oil Pressure Sensor Circuit - High Voltage

C

P0562 ⁽⁸⁾

Low System Voltage

C

P0563 ⁽⁸⁾

High System Voltage

C

PCM Not Programmed/Internal Integrity Condition

A

P0608 ⁽⁶⁾

Vehicle Speed Circuit Fault

C

P0609 ⁽⁹⁾

Vehicle Speed Signal Circuit - Low Voltage

C

5-Volt Reference Circuit Out Of Range

B

MIL Control Circuit

⁽¹⁰⁾ B

Sensor Reference Voltage Circuit

B

P0706 ⁽⁴⁾

Transmission Range Switch

C

P0711 ⁽⁴⁾

TFT Sensor Circuit - Range/Performance

C

P0712 ⁽⁴⁾

TFT Sensor Circuit - Low Input

C

P0713 ⁽⁴⁾

TFT Sensor Circuit - High Input

C

P0716 ⁽⁴⁾

Input/Turbine Speed Sensor Circuit Performance

⁽⁷⁾

P0717 ⁽⁴⁾

Input/Turbine Speed Sensor Circuit Low/No Signal

⁽⁷⁾

P0719 ⁽⁴⁾

Brake Switch Circuit Malfunction

C

P0724 ⁽⁴⁾

Brake Switch Circuit Malfunction

C

P0730 ⁽⁴⁾

Incorrect Gear Ratio

C

P0740 ⁽⁴⁾

TCC Solenoid Valve Circuit - Electrical Malfunction

B

P0741 ⁽⁴⁾

TCC System

⁽⁷⁾

P0742 ⁽⁴⁾

TCC System

⁽⁷⁾

P0748 ⁽⁴⁾

Pressure Control Solenoid Valve Circuit - Electrical Malfunction

C

P0751 ⁽⁴⁾

1-2 Shift Solenoid Valve Performance

⁽⁷⁾

P0752 ⁽⁴⁾

1-2 Shift Solenoid Valve Performance

⁽⁷⁾

P0753 ⁽⁴⁾

1-2 Shift Solenoid Circuit - Electrical Malfunction

⁽⁷⁾

P0756 ⁽⁴⁾

2-3 Shift Solenoid Valve Performance

⁽¹¹⁾

P0757 ⁽⁴⁾

2-3 Shift Solenoid Valve Performance

⁽¹¹⁾

P0758 ⁽⁴⁾

2-3 Shift Solenoid Circuit - Electrical Malfunction

⁽¹¹⁾

P0785 ⁽⁴⁾

3-2 Shift Solenoid Circuit - Electrical Malfunction

B

P0894 ⁽⁴⁾

Excessive TCC Slip

C

MAP Sensor Circuit - Intermittent High Voltage

C

MAP Sensor Circuit - Intermittent Low Voltage

C

IAT Sensor Circuit - Intermittent High Voltage

C

IAT Sensor Circuit - Intermittent Low Voltage

C

ECT Sensor Circuit - Intermittent Low Voltage

C

ECT Sensor Circuit - Intermittent High Voltage

C

TP Sensor Circuit - Intermittent High Voltage

C

TP Sensor Circuit - Intermittent Low Voltage

C

HO2S Circuit - Insufficient Switching - Bank 1, Sensor 1

B

HO2S Circuit - Insufficient Switching - Bank 2, Sensor 1

B

Engine Over-Temperature Condition

A

EBCM DTC Detected Rough Road Data Unstable

C

Misfire Detected - No EBCM/PCM Serial Data

C

EGR Valve Closed Pintle Position

B

P1431 ⁽⁶⁾

Secondary Fuel Level Sensor Signal Lack Of Variation

N/A

P1432 ⁽⁶⁾

Secondary Fuel Level Sensor Signal Lower Than Normal

N/A

P1433 ⁽⁶⁾

Secondary Fuel Level Sensor Signal Higher Than Normal

N/A

PCM Not Programmed/Internal Integrity Condition

A

PCM Not Programmed/Internal Integrity Condition

A

P1626 ⁽¹²⁾

Theft Deterrent System Loss Of Serial Communication

C

PCM Not Programmed/Internal Integrity Condition

A

P1631 ⁽¹²⁾

Theft Deterrent System Password Incorrect

C

P1637 ⁽⁸⁾

Generator Turn-On Signal Circuit Voltage Out Of Range

C

P1638 ⁽⁸⁾

Pulse Width Modulated Signal Out Of Range

C

PCM Not Programmed/Internal Integrity Condition

A

PCM Not Programmed/Internal Integrity Condition

A

PCM Not Programmed/Internal Integrity Condition

B

P1810 ⁽⁴⁾

TFP Manual Valve Position Switch - Circuit Malfunction

⁽⁷⁾

P1860 ⁽⁴⁾

TCC PWM Solenoid Circuit - Electrical Malfunction

⁽⁷⁾

PCM Not Programmed/Internal Integrity Condition

A

UXXXX ⁽³⁾

Network Communication System Malfunction

C

⁽¹⁾	DTC definitions may vary depending on vehicle and/or engine configuration.

⁽²⁾	See CODE TYPES under ON-BOARD DIAGNOSTICS.

⁽³⁾	See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.

⁽⁴⁾	See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

⁽⁵⁾	On vehicles with greater than 8600 lbs. GVW (RPO NF2), MIL will not illuminate when DTC P0300 sets.

⁽⁶⁾	See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.

⁽⁷⁾	This DTC is a type "B" code on all vehicles with less than 8600 lbs. GVW. This DTC is a type "C" code and will not illuminate the MIL on vehicles with greater than 8600 lbs. GVW (RPO NF2).

⁽⁸⁾	See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.

⁽⁹⁾	See appropriate ANTI-LOCK article in BRAKES.

⁽¹⁰⁾	DTC P0650 is a type "B" code, but will not illuminate the MIL.

⁽¹¹⁾	This DTC is a type "A" code on all vehicles with less than 8600 lbs. GVW. This DTC is a type "C" code and will not illuminate the MIL on vehicles with greater than 8600 lbs. GVW (RPO NF2).

⁽¹²⁾	See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.